The ISO week date system is effectively a leap week calendar system that is part of the ISO 8601 date and time standard issued by the International Organization...

Geneva-based ISO standards organization uses Monday as the first day of the week in its ISO week date system through the international ISO 8601 standard...

ISO 8601 is an international standard covering the worldwide exchange and communication of date and time-related data. It is maintained by the International...

calendar. Some, however, such as the ISO week date calendar, are simply conveniences for specific purposes. The ISO calendar in question is a variation...

12th month Academic term Calendar reform Common year Fiscal year ISO 8601 ISO week date Leap year Model year Tropical year Seasonal year "calendar year"...

introduced by Muslim astronomers in the 8th century CE to predict the approximate date of the first crescent moon, which is used to determine the first day of each...

or day number). The two parts of the date can be formatted as "YYYY-DDD" to comply with the ISO 8601 ordinal date format. The year may sometimes be omitted...

Monday could be observed to the previous Friday. Calendar reform ISO week date Leap week calendar Positivist calendar World Calendar See the table in Cotsworth...

(Julian calendar). Opinions vary about the numbering of the days of the week. ISO 8601, in common use worldwide, starts with Monday=1; printed monthly calendar...

ISO 2015 is a standard of the International Organization for Standardization (ISO), superseded by ISO standard ISO 8601. The standard ISO week numbering...

radiocarbon dating, the reference date is January 1, 1950 (though the specific date January 1 is quite unnecessary, as radiocarbon dating has limited...

Jesus-Christ (AD). ISO 8601:2004 (and previously ISO 8601:2000, but not ISO 8601:1988) explicitly uses astronomical year numbering in its date reference systems...

algorithm counts the date as the second day of the fourteenth month of 2009 (02/14/2009 in DD/MM/YYYY format) For an ISO week date Day-of-Week d (1 = Monday...

the following December, 1661/62, a form of dual dating to indicate that in the following twelve weeks or so, the year was 1661 Old Style but 1662 New...

2003-11-09: the standard Internet date/time format, a profile of the international standard ISO 8601, orders the components of a date like this, and additionally...

ISO 8601. Presently, ISO 8601 dating requires use of the Gregorian calendar for all dates, however, whereas astronomical dating and Common Era dating...

the Solar Hijri calendar and the Hebrew calendar year, week, and weekday – e.g., the ISO week date Cycles can be synchronized with periodic phenomena: Lunar...

Radiocarbon dating (also referred to as carbon dating or carbon-14 dating) is a method for determining the age of an object containing organic material...

referred to as Before the Common Era (BCE). Astronomical year numbering and ISO 8601 avoid words or abbreviations related to Christianity, but use the same...

observation-based leap seconds. ISO 8601, standard based on the Gregorian calendar, Coordinated Universal Time and ISO week date, a leap week calendar system used...

and time in 12-hour notation (3:17 pm). International date and time formats typically follow the ISO 8601 format (2024-04-11) for all-numeric dates, write...

Identification of a particular date by means of ordinal dates (ISO 2711) and by means of the week numbering system (ISO 2015) were alternative methods...

the seven-day week are, with the exception of the last two days, named after their ordinal place in the week. On the sixth day of the week, the "gathering...

or calendar) that marks the occurrence of a specified event as to hour or date is obtained by counting from a fiducial epoch – a central reference point...

of 13 synodic months has 54 weeks 5 days 21 hours 589 parts. Four conditions are considered to determine whether the date of Rosh Hashanah must be postponed...

Radiometric dating, radioactive dating or radioisotope dating is a technique which is used to date materials such as rocks or carbon, in which trace radioactive...

span of many years which are numbered beginning at a specific reference date (epoch), which often marks the origin of a political state or cosmology,...

Date and time notation in the United Kingdom records the date using the day–month–year format (31 December 1999, 31/12/99 or 31/12/1999). The ISO 8601...

Astronomical year numbering Others Chinese sexagenary cycle Geologic Calendar Iranian ISO week date Mesoamerican Maya Aztec Winter count New Earth Time...

Astronomical year numbering Others Chinese sexagenary cycle Geologic Calendar Iranian ISO week date Mesoamerican Maya Aztec Winter count New Earth Time...